– 23 –
– 24 –
4-4. BLOCK DIAGRAM — POWER SUPPLY SECTION —
NW-MS7
04
35
5
2
1
4
5
1
5
2
3
34
133
138
7
CHARGE LED
25
RXD0 LCD SDA
24
TXD0 LCD SDA
PD24 LCD XRST
PI4 HIDC
PD22 LCD CLK
XCS4 LCD XCS
78
2
76
38
PC21 S PWR
TXD2 ST DI
RXD2
155
PE22 LCD BL
169
173
PI0 AN BATTV
150
PE18 U PWR
120
NMI
AN1 AN KEY
PI7 STOP
PH1 JOG
PH0 HOLD
XIRQ3 MS EJ
PC24 PCON
87
PD17 WKUP MSK
PC25 AU PWR
121
XRES
171
PI2 BATT
158
PF2 BATTSW OPEN
170
AN3 AN DCV
SYSTEM CONTROL
IC701 (3/3)
BATTERY
CHARGER
(2/2)
BACK LIGHT
ON/OFF SWITCH
Q601
LIQUID
CRYSTAL
DISPLAY
PANEL
LCD701
3
2
+3V REGULATOR
IC710
VOUT
VIN
1
2
OUT
VDD
1
2
OUT
VDD
3
2
RESET
IC714
VOUT
VIN
IC702 POWER
SWITCH
Q701,711
MS-POWER
SWITCH
Q703,713
42
PC18 MS PWR
IC703 POWER
SWITCH
Q705,715
AU-POWER
SWITCH
Q305
PCON
SWITCH
Q511
SWITCHING
Q505
SWITCHING
Q504
REFERENCE
VOLTAGE
SUPPLY
(SOFT START)
PCON
SWITCH
Q512
SOFT
START
CIRCUIT
PWM
CONTROL
CIRCUIT
WAKE UP
SWITCH
Q802
WAKE UP MASK SWITCH
Q803
KEY
SWITCH
Q801
WAKE UP
SWITCH
Q804
EJECT
DETECTOR
Q709
S805
RIPPLE
FILTER
Q302,303
SWITCHING
Q506-508
VCC
+3.3V
3.2V VOLTAGE DETECTOR
IC507
3.5V VOLTAGE DETECTOR
IC508
2
1
VDD
OUT
5.6V VOLTAGE DETECTOR
IC504
D502
D507
D506
D505
3
2
5
4
5
7
6
8
3
VOLTAGE
REFERENCE
CURRENT
LIMIT
CHARGE
CONTROL
Q501
CHARGE
SWITCH
Q502
BATTERY
OPEN
SWITCH
Q503
HIDC
SWITCH
Q510
DC IN/BATTERY
DETECT SWITCH
Q509
OUTPUT
CONTROL
CONSTANT
CURRENT
CONTROL
CONSTANT
VOLTAGE
CONTROL
LOW
VOLTAGE
DETECTION
LITHIUM-ION BATTERY CHARGE CONTROL
IC503
VOLTAGE
REFERENCE
OUTPUT
CONTROL
USB
POWER
SWITCH
Q702,708
RECHARGEABLE
BATTERY
(LITHIUM-ION)
DC IN 3.7V
+3.3V REGULATOR
IC502
S702
(RESET)
x
DISPLAY/
MENU
S803,804
VOLUME
S801,802
S701
(EJECT)
1
T
4
172
166
174
175
151
C
+3.3V REGULATOR
IC707
CURRENT
LIMIT
3
HPVCC
+3V
+3.3V
+3.3V
+3.3V
AVCC
+3V
PWM/PFM CONTROL,SWITCHING REGULATOR
IC506
EXT
ON/OFF
VOUT
S806
HOLD
D801
D802
D807
D703
D702
D701
D509
D508
D704
D503
D512
VIN
CE
VOUT
S807
(FUNCTION)
JOG PLAY/PAUSE
JOG +
JOG -
VOUT
EXT
VIN
PWM CONTROL,
PWM/PFM SWITCH
CONTROL CIRCUIT
ON/XOFF
CE
VOUT
+3.3V
D504
CHARGE
CEL
CS
SW2
SW1
VCC
LCD BACK LIGHT UNIT
DC IN
READY
RST
CS
VCC
VCI
SCL
SDA
DATA O2S
DATA S2O
USB VCC
L502
L501
PWM CONTROL,SWITCHING REGULATOR
IC505
EXT
USB VCC
+3.3V